List of works - Samuli Helama

A 434-year tree-ring chronology of spruce (Picea abies) with indications of Estonian precipitation

scientific article published on 05 March 2015

A 7.5 ka chronology of stable carbon isotopes from tree rings with implications for their use in palaeo-cloud reconstruction

scientific article

A Review of Citation Patterns in Doctoral Dissertations at the Department of Geology, University of Helsinki, Finland, since 1896

scholarly article by Samuli Helama published in April 2012

Age-related trends in subfossil tree-ring δ13C data

scientific article

Analysis of reconstructed annual precipitation from tree-rings for the past 500 years in the middle Qilian Mountain

Arctic hydroclimate variability during the last 2000 years: current understanding and research challenges

article

Arctic moistening provides negative feedbacks to riparian plants.

scientific article published on 13 February 2018

Author Correction: Solar superstorm of AD 774 recorded subannually by Arctic tree rings

scientific article published on 15 March 2019

Buried in water, burdened by nature-Resilience carried the Iron Age people through Fimbulvinter

scientific article published on 21 April 2020

Causes and consequences of past and projected Scandinavian summer temperatures, 500-2100 AD.

scientific article

Climatic variability and the population dynamics of historical hunter-gatherers: the case of Sami of Northern Finland

scientific article

Climatic, weather, and socio-economic conditions corresponding to the mid-17th-century eruption cluster

scientific article published in 2022

Coexisting responses in tree-ring δ 13 C to high-latitude climate variability under elevated CO 2 : A critical examination of climatic effects and systematic discrimination rate changes

scientific article

Comment on “Absence of Age‐Related Trends in Stable Oxygen Isotope Ratios From Oak Tree Rings” by Duffy et al. (2019)

scientific article published in 2020

Compound response of marine and terrestrial ecosystems to varying climate: pre-anthropogenic perspective from bivalve shell growth increments and tree-rings.

scientific article published on 5 September 2006

Constructing long-term proxy series for aquatic environments with absolute dating control using a sclerochronological approach: introduction and advanced applications

article

Dark Ages Cold Period: A literature review and directions for future research

article

Dendrochronological dating of wooden artifacts by measuring the tree rings using magnifying glass and photography-assisted method: an example of a Dutch panel painting

scientific article

Dendrochronological investigation of wood extractives

scientific article

Dendroclimatology. Progress and Prospects. Malcolm K. Hughes, Thomas W. Swetnam, Henry F. Diaz (Eds.) Developments in Paleoenvironmental Research, Vol. 11. 1st Edition, 2011, XII, 365 p. Hardcover, ISBN 978-1-4020-4010-8

Depositional history of peatland pines (<i>Pinus sylvestris</i> L.) in NW Enontekiö, Finnish Lapland: implications for Middle Holocene drought and temperature fluctuations

scientific article published in 2023

Does diurnal temperature range influence seasonal suicide mortality? Assessment of daily data of the Helsinki metropolitan area from 1973 to 2010.

scientific article

Evolutionary ecology of human birth sex ratio under the compound influence of climate change, famine, economic crises and wars

scientific article

Exact dating of the Meghalayan lower boundary based on high-latitude tree-ring isotope chronology

scientific article

Finnish National Phenological Network 1997-2017: from observations to trend detection

scientific article published on 06 July 2020

Food availability at birth limited reproductive success in historical humans ⬇️

scientific article published on December 1, 2010

Forest carbon sink neutralized by pervasive growth-lifespan trade-offs

scientific article published on 08 September 2020

From lakes to ratios: 14C measurement process of the Finnish tree-ring research consortium

scientific article published in 2022

Frost rings in 1627 BC and AD 536 in subfossil pinewood from Finnish Lapland

scientific article published in January 2019

Fusing pollen-stratigraphic and dendroclimatic proxy data to reconstruct summer temperature variability during the past 7.5 ka in subarctic Fennoscandia

scholarly article

Hydroclimatic variations over the last millennium in eastern Finland disentangled by fossil Cladocera

scholarly article by Liisa Nevalainen published in May 2013

Isoscapes of plant δ 13 C in the northern forests: Addressing the question of inter-tree and -site variability in Pinus sylvestris L. tree rings from Finnish Lapland

scientific article

LA-ICP-MS-derived U-concentrations and microstructural domains within biogenic aragonite of Arctica islandica shell

scientific article published on 17 April 2015

Last millennium Northern Hemisphere summer temperatures from tree rings: Part II, spatially resolved reconstructions

article

Last millennium northern hemisphere summer temperatures from tree rings: Part I: The long term context

article

Little Ice Age Farming in Finland: Preindustrial Agriculture on the Edge of the Grim Reaper’s Scythe

journal article from 'Human Ecology' published in 2009

Multicentennial megadrought in northern Europe coincided with a global El Niño–Southern Oscillation drought pattern during the Medieval Climate Anomaly

scholarly article

Multiscale variation in drought controlled historical forest fire activity in the boreal forests of eastern Fennoscandia

scientific article published in 2017

Old World megadroughts and pluvials during the Common Era

scientific article published on 6 November 2015

Palaeoclimatological and palaeolimnological records from fossil midges and tree-rings: the role of the North Atlantic Oscillation in eastern Finland through the Medieval Climate Anomaly and Little Ice Age

scholarly article by Tomi P. Luoto & Samuli Helama published August 2010 in Quaternary Science Reviews

Paleoclimatological evidence for unprecedented recent temperature rise at the extratropical part of the northern hemisphere

Plant phenological data and tree-rings as palaeoclimate indicators in south-west Finland since AD 1750.

scientific article

Plant phenological records in northern Finland since the 18th century as retrieved from databases, archives and diaries for biometeorological research ⬇️

scientific article published on June 29, 2012

Reconciling pollen-stratigraphical and tree-ring evidence for high- and low-frequency temperature variability in the past millennium

article

Reconstruction of precipitation variability in Estonia since the eighteenth century, inferred from oak and spruce tree rings

scientific article published in 2017

Recurrent transitions to Little Ice Age-like climatic regimes over the Holocene

Solar superstorm of AD 774 recorded subannually by Arctic tree rings

scientific article published in Nature Communications

Something old, something new, something borrowed: New insights to human-environment interaction in medieval Novgorod inferred from tree rings

scientific article published in 2017

Stone Age midden deposition assessed by bivalve sclerochronology and radiocarbon wiggle-matching of Arctica islandica shell increments

Stream flow intensity of the Saavanjoki River, eastern Finland, during the past 1500years reflected by mayfly and caddisfly mandibles in adjacent lake sediments

article

Subfossil peatland trees as proxies for Holocene palaeohydrology and palaeoclimate

Temperature-associated suicide mortality: contrasting roles of climatic warming and the suicide prevention program in Finland

scientific article

Temperature-related birth sex ratio bias in historical Sami: warm years bring more sons

scientific article published on February 2008

The influence of decision-making in tree ring-based climate reconstructions

scientific article published in 2021

Transient Offset in <sup>14</sup>C After the Carrington Event Recorded by Polar Tree Rings

scientific article published on 5 March 2024

Tree-ring science under the midnight sun: Papers from the 8th International Conference on Dendrochronology—WorldDendro 2010

scientific article

Use, calibration and verification of agroecological models for boreal environments: A review

scientific article published in 2022

Variation and seasonal patterns of suicide mortality in Finland and Sweden since the 1750s

scientific article published on 09 July 2013

Volcanic dust veils from sixth century tree-ring isotopes linked to reduced irradiance, primary production and human health.

scientific article

[Finnish suicide mortality from 1950 to 2009 in an European comparison]

scientific article published on 01 January 2014

List of works by Samuli Helama

A 434-year tree-ring chronology of spruce (Picea abies) with indications of Estonian precipitation

A 7.5 ka chronology of stable carbon isotopes from tree rings with implications for their use in palaeo-cloud reconstruction

A Review of Citation Patterns in Doctoral Dissertations at the Department of Geology, University of Helsinki, Finland, since 1896

Age-related trends in subfossil tree-ring δ13C data

Analysis of reconstructed annual precipitation from tree-rings for the past 500 years in the middle Qilian Mountain

Arctic hydroclimate variability during the last 2000 years: current understanding and research challenges

Arctic moistening provides negative feedbacks to riparian plants.

Author Correction: Solar superstorm of AD 774 recorded subannually by Arctic tree rings

Buried in water, burdened by nature-Resilience carried the Iron Age people through Fimbulvinter

Causes and consequences of past and projected Scandinavian summer temperatures, 500-2100 AD.

Climatic variability and the population dynamics of historical hunter-gatherers: the case of Sami of Northern Finland

Climatic, weather, and socio-economic conditions corresponding to the mid-17th-century eruption cluster

Coexisting responses in tree-ring δ 13 C to high-latitude climate variability under elevated CO 2 : A critical examination of climatic effects and systematic discrimination rate changes

Comment on “Absence of Age‐Related Trends in Stable Oxygen Isotope Ratios From Oak Tree Rings” by Duffy et al. (2019)

Compound response of marine and terrestrial ecosystems to varying climate: pre-anthropogenic perspective from bivalve shell growth increments and tree-rings.

Constructing long-term proxy series for aquatic environments with absolute dating control using a sclerochronological approach: introduction and advanced applications

Dark Ages Cold Period: A literature review and directions for future research

Dendrochronological dating of wooden artifacts by measuring the tree rings using magnifying glass and photography-assisted method: an example of a Dutch panel painting

Dendrochronological investigation of wood extractives

Dendroclimatology. Progress and Prospects. Malcolm K. Hughes, Thomas W. Swetnam, Henry F. Diaz (Eds.) Developments in Paleoenvironmental Research, Vol. 11. 1st Edition, 2011, XII, 365 p. Hardcover, ISBN 978-1-4020-4010-8

Depositional history of peatland pines (<i>Pinus sylvestris</i> L.) in NW Enontekiö, Finnish Lapland: implications for Middle Holocene drought and temperature fluctuations

Does diurnal temperature range influence seasonal suicide mortality? Assessment of daily data of the Helsinki metropolitan area from 1973 to 2010.

Evolutionary ecology of human birth sex ratio under the compound influence of climate change, famine, economic crises and wars

Exact dating of the Meghalayan lower boundary based on high-latitude tree-ring isotope chronology

Finnish National Phenological Network 1997-2017: from observations to trend detection

Food availability at birth limited reproductive success in historical humans ⬇️

Forest carbon sink neutralized by pervasive growth-lifespan trade-offs

From lakes to ratios: 14C measurement process of the Finnish tree-ring research consortium

Frost rings in 1627 BC and AD 536 in subfossil pinewood from Finnish Lapland

Fusing pollen-stratigraphic and dendroclimatic proxy data to reconstruct summer temperature variability during the past 7.5 ka in subarctic Fennoscandia

Hydroclimatic variations over the last millennium in eastern Finland disentangled by fossil Cladocera

Isoscapes of plant δ 13 C in the northern forests: Addressing the question of inter-tree and -site variability in Pinus sylvestris L. tree rings from Finnish Lapland

LA-ICP-MS-derived U-concentrations and microstructural domains within biogenic aragonite of Arctica islandica shell

Last millennium Northern Hemisphere summer temperatures from tree rings: Part II, spatially resolved reconstructions

Last millennium northern hemisphere summer temperatures from tree rings: Part I: The long term context

Little Ice Age Farming in Finland: Preindustrial Agriculture on the Edge of the Grim Reaper’s Scythe

Multicentennial megadrought in northern Europe coincided with a global El Niño–Southern Oscillation drought pattern during the Medieval Climate Anomaly

Multiscale variation in drought controlled historical forest fire activity in the boreal forests of eastern Fennoscandia

Old World megadroughts and pluvials during the Common Era

Palaeoclimatological and palaeolimnological records from fossil midges and tree-rings: the role of the North Atlantic Oscillation in eastern Finland through the Medieval Climate Anomaly and Little Ice Age

Paleoclimatological evidence for unprecedented recent temperature rise at the extratropical part of the northern hemisphere

Plant phenological data and tree-rings as palaeoclimate indicators in south-west Finland since AD 1750.

Plant phenological records in northern Finland since the 18th century as retrieved from databases, archives and diaries for biometeorological research ⬇️

Reconciling pollen-stratigraphical and tree-ring evidence for high- and low-frequency temperature variability in the past millennium

Reconstruction of precipitation variability in Estonia since the eighteenth century, inferred from oak and spruce tree rings

Recurrent transitions to Little Ice Age-like climatic regimes over the Holocene

Solar superstorm of AD 774 recorded subannually by Arctic tree rings

Something old, something new, something borrowed: New insights to human-environment interaction in medieval Novgorod inferred from tree rings

Stone Age midden deposition assessed by bivalve sclerochronology and radiocarbon wiggle-matching of Arctica islandica shell increments

Stream flow intensity of the Saavanjoki River, eastern Finland, during the past 1500years reflected by mayfly and caddisfly mandibles in adjacent lake sediments

Subfossil peatland trees as proxies for Holocene palaeohydrology and palaeoclimate

Temperature-associated suicide mortality: contrasting roles of climatic warming and the suicide prevention program in Finland

Temperature-related birth sex ratio bias in historical Sami: warm years bring more sons

The influence of decision-making in tree ring-based climate reconstructions

Transient Offset in <sup>14</sup>C After the Carrington Event Recorded by Polar Tree Rings

Tree-ring science under the midnight sun: Papers from the 8th International Conference on Dendrochronology—WorldDendro 2010

Use, calibration and verification of agroecological models for boreal environments: A review

Variation and seasonal patterns of suicide mortality in Finland and Sweden since the 1750s

Volcanic dust veils from sixth century tree-ring isotopes linked to reduced irradiance, primary production and human health.

[Finnish suicide mortality from 1950 to 2009 in an European comparison]

A 7.5 ka chronology of stable carbon isotopes from tree rings with implications for their use in palaeo-cloud reconstruction